Wrench.



PATENTED JUNE 9, 1908.l

B.'N. LEHMAN.

WRENCH. PELIUTION FILED Nov- 6. 1907.

rn: Non". zum en.. 'asuma-roy'. n. c.

UNITED STATES PATENT OFFICE.

BENJAMIN N. LEHMAN, oF sALT LAKE CITY, UTAH.

WRENCH.

Specification of Iietters Patent.

Patented .Tune 9, 1908.

Application filed November 6, 1907. Serial No. 400,909.-

'wrench, in which means are provided for easily assembling the parts and at the same time producing a strong and durable construction.

It further consists in providing a lug integral with the handle for the adjusting screw.

It further consists in forming the handle in sections and in connecting the same together by novel .means It further consists of other novel details of construction, all as will bev hereinafter fully set forth.

Figure 1 represents a side elevation of a wrench embodying my invention. Fig. 2 represents a front elevation thereof. Fig. 3 represents a section on line cc-, Fig. '1. Fig. 4 represents a sectionlon line ydy, Fig. 1. Fig. 5 represents aside elevation of a wrench showing a construction which may be employed on large size.

Similar numerals of reference indicate corres onding parts in the figures.

hile, in the drawings, have shown a form of wrench which has proved successful in practice and which will illustrate my invention, it will be understood that the arts may be changed, the arrangement o the same may be varied and other instrumentali-.-

ties may be employed, which will come within the scope of my invention, and I do not, therefore, desire to be limited, in every instance, to the construction herein described and shown.

In said drawing, 1 designates a Wrench having a fixed jaw 2 and an inner or movable jaw 3, and the shank 4, which carries said fixed jaw 2 and which is provided upon a side thereof with the teeth or ratchet 5. The said shank 4 is adapted to telescopically fit or enter the handle of the wrench, which is formed of the two sections 6 and 7, the inner face of each of which is provided with joints of the form of rabbets, which engage and interlock, the sections being furthermore secured together by screws 10 or other suitable means, whereby it will be understood that said sections are firmly connected as if formed in one piece, while the rabbets serve to relieve said screws of undue strain or shearing action.

The interlocking of the sections by the rabbets or joints 8, 9 in addition to the screws 10 causes the sections of the handle, head, and boss to be firmly connected and so adapted to endure the rotary strain to which the handle is subjected when the wrench is in use. The head 11 is composed of like matched plates each having a recess in its inner side to receive the shank 4. The boss 14 is also composed of like matched plates each having a recess in its inner side to receive the shank 4, the sections being respectively integral with the sections of the head.

The handle of the wrench is continuous of the head 11 and likewise composed ofv like matched plates adapted to receive said shank 4. Consequently the matched members have their inner faces placed together and in contact and when secured form practically a single member although composed of the boss, head and handle members which renders the device strong, durable inexpensive and of few parts, admitting of the convenient assemblage of the parts of the device. This form of construction also facilitates and simpliiies the manufacture of the arts. The sections of the handle are also ormed with a sectional head 11, which on one side is provided, with the recess 12, formin a shoulder 13 and anear or boss 14, whic is formed in sections, respectively, integral with the sections of the handle. The movable jaw 3, which freely encircles said shank 4 has a suitable portion adapted to be engaged by a screw 15, which is swiveled or journaled in the boss 14 aforesaid and which 1s provided with a milled head 16, which freely occupies said recess 12, said screw also having a gudgeon or stud 17 bearing upon the shoulder 13 as a step therefor, the latter thus being adapted to receive a portion of the strain on the screw when the wrench is in use. Owing to the boss 14 being formed in sections, the screw 15 may be readily located, while assembling the hand sections.

18 designates a dog, which rimarily occupies a suitable recess in the si e of the head 11, and upon the side thereof adjacent which the teeth or ratchet 5 on the shank 4 are situated, said dog being connected with a stem 19, which passes through a transversely extending recess in the said head and has.

pressed button 20, which as apparent, oc-

' cupies a position on the side of the head o osite to said dog, so that when the han e 1s grasped, the thumb or fin er of the operator may be immediately app ied to said button, the latter being preferably adjacent to the head 16, which is also conveniently accessible when the handle is grasped.

When the wrench is to be used, the button 20 is pushed in, and the shank 4 is released, since the dog 18 is removed from engagement with the ratchet 5 thereon, so that the said shank 4 and the jaw 2 can be moved to a desired position away from the jaw 3. The jaws can easily receive the article to be grasped, and by o eration of4 the head 16, the jaw 3 is broug 1t into contact with the obj ect which is thus locked between the jaws. I preferably form the edges or corners of the shank 4 rounded as at 21, Where the same enters the handle and I corres ondingly round the inner edges 0r corners of) the handle as at 22, so that the contiguous parts closely it each other, and the handle is permitted to be of lighter construction.

If desired, I may omit-the handle ortion, in which event, the construction will e similar to that shown in Fig. 5, in which I form the head 23 of two separable portions or sections, the saine as the handles previously described and connect the two sections by means of screws or other fastening means 24, the remainder of the construction being the same, as already described, it being understood that the shank 4, which projects beyond the head 23 will serve as the handle for the operation of the tool, and as the corners or edges of the shank are rounded, it makes said handle convenient and satisfactory in use.

It will be further understood that if desired, the movable jaw 3 may be pivotally mounted on the frame which carries the same, I

thus lleadily'adapting the wrench for pipe or other purposes.

Having thus described my invention, what I claim as new and desire to -secure by Letters Patent, is

1. In a wrench, a boss and a head, said parts being formed of integral complementary matched sections having rabbeted joints.

2. In a wrench, a boss, a handle, and a head, said parts being formed of integral complementary matched sections having rabbeted joints.

3. In a wrench, a handle formedof complementary matched sections, the inner faces of said sections formed with interlocking joints, and means for securing the sections as one, said means being disposed at right angles to the interlocking joints.

4. In a wrench, a handle, a boss, and a head formed of integral com lementary matched sections with rabbete( joints, a

shank received in correspondinor recesses in the inner faces of the sections of the handle, boss and head, a fixed jaw, a movable jaw and a screw received in said boss with one end stepped'on the shoulder of the head.

A5. In a wrench, a fixed jaw, a movable jaw, a substantially rectangular shank with rounded edges connected with said fixed jaw, a handle having its interior corners simiarly rounded to receive the portion of the shank with rounded edges, said handle being in sections and having rabbeted locking members on the interior of the sides of said sections and fastening screws eXteriorly insertible at right angles to the joints of said members.

BENJAMIN N. LEHMAN. Witnesses: i

C. W. JoH'NsoN, A. E. CANFIELD. 

